baber/WOPTO huggingface dataset:
Patent GB-1260372-A (GB)
Title: Improvements in or relating to earthworking implements
IPC: A01B3/46
Filed: 1969-04-03
Abstract: 1,260,372. Steering semi-mounted implements. MASSEY-FERGUSON Inc. 3 April, 1969 [10 April, 1968], No. 17439/69. Heading A1B. [Also in Division B7] A semi-mounted earthworking implement, e.g. reversible plough as described in Specification 1,171,986, includes a draught member 6, a means 4 for connecting the implement to the draught links 2 of a tractor, two spindles 15 and 24 rotatably mounted on members 22 and 10 and interconnected by a shaft 31 and a power means 56 for selectively rotating the spindle 15. A ground wheel 29 is mounted to turn with and about the axis of the spindle 24 in response to the operation of the power means to maintain the draught member offset, to one side or the other, from the longitudinal axis of the draught vehicle depending on which set of plough bodies is in use. The power means then maintains the spindle in a selected angular position relative to the frame 8 and any deviation of the tractor from a straight line causes the shaft 31, and hence the spindle 24 and ground wheel 29, to turn accordingly. The plough bodies are rotatable on the draught member 6 so that either or neither of the sets of plough bodies are in ground engagement. The wheel 29 trails the operative set of plough bodies in the furrow formed thereby with the distance between the axis of rotation of the wheel and the draught member, measured along a normal to the axis of rotation of the wheel, being constant irrespective of the position of the plough bodies.
Patent GB-710764-A (GB)
Title: Improvements in and relating to electric control systems
IPC: H02P7/32
Filed: 1951-07-24
Abstract: 710,764. Control of motors. BRITISH THOMSON-HOUSTON CO., Ltd. July 24, 1951 [July 26, 1950], No. 17499/51. Class 38(3) [Also in Group XXXV] The current supplied from a constant voltage source 4 to the separate field winding 3 of a motor having an armature 1 is kept constant at any value to which it is adjusted by connecting an amplidyne, the secondary armature reaction of which is undercompensated, in the field circuit of the motor. As shown, the amplidyne operates throughout its working range solely as a stepdown machine, the voltage at brushes 5, 6, never being reversed. A stator winding 9 of the amplidyne is energized in accordance with the voltage across brushes 5, 6, and operates to reduce the short-circuit current of the brushes 7, 8. A stator winding 11 opposes the winding 9 and is adapted to prevent the latter from producing excessive flux along the short-circuit axis when the voltage at brushes 5, 6, is substantially equal to the internal voltage-drop of the amplidyne (i.e. corresponding to full field operation of the motor). The current applied to the motor field winding 3 is substantially proportional to that flowing in the control field winding 12 of the amplidyne. The latter winding is supplied from the constant voltage source 4 through potentiometer 13, 14, and in series with the winding are connected a rheostat 17, a fixed resistor 18 (the ohmic value of which is much greater than that of the winding 12) and a portion of resistor 19 which has a sliding contact 15 in common with potentiometer resistor 14. The winding 12 is constructed of material having a small temperature coefficient. Adjustment of the rheostat 17 allows fine regulation of the speed of the motor, separate from the regulation provided by the slider 15. An additional winding 22 on the same axis as the winding 12 regulates the degree of compounding of the motor 1. The winding 22 is energized through potentiometer 23, which is adjusted in common with the contact 15, in accordance with the armature current of the motor 1. In a multi-motor drive, the sliding contacts 15 may be adjusted together by means of servomotors and a common controller, the individual speed-regulation of each motor being effected by means of the rheostats 17. By modifying its stator windings the amplidyne may be operated solely as a booster.
Patent GB-787991-A (GB)
Title: Oil heating unit
IPC: F01M5/00
Filed: 1954-06-15
Abstract: 787,991. Heating oil in tanks. LOW, Ltd., D., and LOW, D. W. June 15, 1955 [June 15, 1954], No. 17518/54. Class 64(3) An oil heating unit for use in an oil storage tank comprises a thermostatically controlled heating element 1 and a casing partitioned to prevent an oil passage surrounding the heating element, the casing and partitions being constituted by three coaxial tubes 2, 3, 4 communicating with one another and so disposed that when no oil is being pumped from the tank there is maintained surrounding the heating element 1 a jacket of oil the level of which does not fall below the top of the intermediate tube 3 irrespective of the oil level in the tank 8. In the form shown the arrows denote the oil path through the heating unit, the inner tube 4 of the unit communicating with an oil outlet member 7 in which the heating element 1 is supported.
Patent GB-585804-A (GB)
Title: Process for impregnating warp yarns prior to weaving
IPC: D06B3/18
Filed: 1943-10-26
Abstract: <PICT:0585804/IV/1> Warp yarns are impregnated under pressure and prior to weaving, with a low-viscosity alkaline dispersion of an alkali-soluble, water-insoluble cellulose ether, the cellulose ether being subsequently coagulated within the yarns while they are separated from one another, after which they are dried.  The process facilitates the subsequent weaving operation, permanently lays the nap, and stabilizes the twist of the yarn, and provides the woven fabric with a permanent size which does not have to be removed before dyeing, mercerising or bleaching.  A plurality of single or ply yarns of all types, such as cotton, ramie, jute, flax, rayon, casein fibre, "Vinyon" (Registered Trade Mark), vinylidene chloride fibre, and nylon or mixtures thereof may be treated according to the invention. The cellulose ether may be an alkyl, hydroxy-alkyl or carboxy-alkyl cellulose, and may be coagulated on the fibre by coagulants such as acids, acid-salts, salts and heat, or hot water.  The cellulosic ether is dispersed in an aqueous solution of an alkali such as sodium or potassium hydroxide or an aralkyl ammonium hydroxide, and to obtain dispersions of low viscosity the ether is initially degraded by heat, or by heating with acids, alkalies or oxidising agents; or oxidising agents such as ammonium persulphate, alkali perborates, alkali perchlorates, or hydrogen peroxide may be added to the dispersion; or the dispersion may be heated during its application to the yarn. Wetting agents such as sulphated fatty alcohols, or sulphonated fatty acids and pigments, dyestuffs, and compatible colloids such as rubber latex and alkali soluble synthetic resins may be added to the dispersion.  An apparatus suitable for effecting the process comprises a four-box slasher in which box 12 with heating jacket 13, contains the impregnating composition, box 15 the coagulant, box 17 wash water and box 18 dilute alkali wash liquor. A plurality of warp yarns are unwound from beam 11, impregnated with the dispersion in box 12, passed between pressure rollers 21 and 22 of which 21 has a rough surface and that of 22 is smooth and resilient, separated to prevent adhesion by splitter rods 23, passed through coagulating box 16 and pressure rollers 20, again separated by rods 231, washed in boxes 17 and 18, dried by heating cans 24 and 25 and wound on beam 26.  To prevent overlapping combs 27 are provided at suitable points. Specification 507,137 is referred to. The Specification as open to inspection under Sect. 91 comprises also the use of solutions of cellulose, degraded or otherwise, in alkali, alkali stannate, alkali zincate or alkyl ammonium hydroxide for impregnating warp yarns.  This subject-matter does not appear in the Specification as accepted.
Patent GB-633656-A (GB)
Title: Improvements in or relating to the preparation of 2-amino-4-hydroxy-6-methyl pyrimido [4, 5-b] pyrazines
Filed: 1947-07-04
Abstract: 2 - Amino - 4 - hydroxy - - methyl pyrimido (4 : 5-6) pyrazine is prepared by reducing a 2-amino-4-hydroxy pyrimido (4 : 5-6) pyrazine substituted in the 6-position by a group CH2Y, in which Y is a nitrogen atom substituted to form a tertiary amine or quaternary ammonium group, whereby Y is replaced by hydrogen. During the reduction the pyrazyl ring may in part be hydrogenated to the dihydro form, in which case the product may be oxidized, e.g. by oxidizing agents or by exposure to oxygen, to form the pyrazyl ring.  In examples: (1) N-[(2 - amino - 4 - hydroxy - 6 - pyrimido (4 : 5-6) pyrazyl) methyl] pyridinium iodide is reduced with zinc dust and sodium hydroxide and the product is oxidized with potassium permanganate to give 2-amino-4-hydroxy-6-methyl pyrimido (4 : 5-6) pyrazine; and (2), (3) and (4) the process of (1) is repeated using hydrogen peroxide for the final oxidation step.  N - [(2 - Amino - 4 - hydroxy - 6 - pyrimido (5 : 5-6) pyrazyl) methyl] pyridinium iodide is prepared by reacting 2 : 4 : 5 - triamino - 6 - hydroxy pyrimidine dihydrochloride with 2 : 3-dibromopropionaldehyde in the presence of pyridine and treating the product with iodine in aqueous potassium iodide.
Patent GB-399617-A (GB)
Title: Improvements in or relating to journal bearings for shafts and the like
IPC: F16C9/02
Filed: 1932-06-23
Abstract: 399,617. Supporting bearings; lubricating passages. WARD, Ltd., T. W., Albion Works, Savile Street, WALKER, S. and CHARLESWORTH, T. R., Victoria Works, Millhouses, both in Sheffield. June 23, 1932, No. 17712. [Classes 12 (i) and 12 (iii).] The ends of a crank shaft 6 are made in the form of a cupped disc 11. between which and spigots 14 supported by a casing 7 are ball bearings. The spigots are preferably formed on cover-plates 13 closing holes in the casing through which the shaft 6 may be passed. In the bearing A, Fig. 2, the disc 11 is surrounded by a flange 18 on the casing. The casing contains a bath of oil 19 which has access to the bearing A by way of clearances 20, 21. A groove 22 is formed in the flange and communicates with a passage 23, Fig. 5, and a pipe 24 adapted to convey oil to parts above the oil level. Oil is carried to the passage 23 by the moving edge of the disc 11 which may have a scroll, pockets, vanes, or the like formed in it to increase the flow.
Patent GB-107527-A (GB)
Title: Improvements in or relating to Life-boats adapted to be Closed in a Watertight Manner.
Inventor: BEEK JOHANNES BAREND VAN
IPC: B63C9/02
Filed: 1916-12-09
Abstract: 107,527. Beek, J. B. van. Dec. 9, 1916. Hatches and hatchways; fenders. - In an enclosed cylindrical life-boat having a conical bow and stern 5, 4, the hatchways 2 are arranged to extend over the whole width of the boat, the cover or lids 3 slide longitudinally, and are made of smaller radius than the midships. Upon closing, the covers are bent outwards against a packing-ring 15 by pivoted bolts and nuts 14 which swivel into notches in the edges of the covers. The bow 5, stern 4, and midship parts 1 are riveted to annular frames 6 provided with blocks 16 for taking up shocks.
Patent GB-674571-A (GB)
Title: Improvements in hermetically-sealed couplings for connecting rotary driving and driven elements
IPC: F16J15/52
Filed: 1950-07-17
Abstract: 674,571. Linkwork for conveying rotary motion. MUNRO, R. Dec. 8, 1950 [July 17, 1950], No. 17795/50. Class 80 (iii). Rotary motion is transmitted through a fluidtight flexible diaphragm 10 by means of a non- rotatable wobble pin 3 secured to the diaphragm and engaging inclined bores or slots 5 in driving and driven dogs 2. The dogs are mounted in a fixed casing 1 and are spherically flared at 11 to bear on ball parts 8 fixed to or rotatable on the pin 3. The parts 8 are mounted in a cage formed by two rings 6 between which is clamped a ring 9 carrying the diaphragm 10. Recesses 12 in the parts 8 may co-operate with axial or radial fixed pins 13 to prevent rotation of the pin 3. In a modification the rings 6 are dispensed with and the dogs.are conically flared. In a further modification, Fig. 6 (not shown), the flared mouths 11 are replaced by cylindrical bores housing sleeves secured to the diaphragm, and no ball parts are provided. The pin 3 may then have radial pins engaging holes in the said sleeves. In further modifications, the ball parts 8 may be completely housed in the mouths 11; the slot 5 may be enlarged and parallel to the axis of the dogs; or the internal bearing member for the dogs may be a combination of a fixed cylindrical sleeve and a ball part on the wobble pin.
Patent GB-712981-A (GB)
Title: Improvements in and relating to the de-alkylation of aromatic hydrocarbons
Inventor: CLOUGH HARRY
IPC: C07C4/18
Filed: 1950-07-17
Abstract: Alkyl-substituted monocyclic aromatic hydrocarbons are de-alkylated by treatment at above 500 DEG  C. and above 100 atmos. with hydrogen in the presence of a catalyst comprising an aluminium silicate and ferric fluoride.  Toluene, xylenes, ethylbenzene, and trimethylbenzenes may be treated or mixtures such as oils from petroleum, coal tar or coal distillation or extracts thereof. Paraffins, naphthenes, olefins, and diolefins may be present. Fractions of cracked petrols boiling at 125-150 DEG  and 150-175 DEG C. are suitable.  Desulphurization, dehydrogenation, and cyclization may occur.  Preferred reaction conditions are 500-600, especially 540-570 DEG  C. and 200-300 ats.  Batch or continuous operation is employed.  In examples, the effects of varying reaction temperature, feed rate, and pressure in treating xylenes, and the effects of feed rate on trimethylbenzenes are illustrated.  A cracked petrol cut containing trimethylbenzenes is treated to produce benzene and toluene, a coke oven benzole to increase the benzene content and remove sulphur, and toluene converted to benzene.  The catalyst contains "Superfiltrol" and ferric fluoride (see Group III). Specification 712,980 is referred to.ALSO:Catalysts for the de-alkylation of monocyclic aromatic hydrocarbons comprise an aluminium silicate and ferric fluoride. Synthetic or natural silicate may be used, particularly "Superfiltrol."  Ferric hydroxide may be dissolved in excess aqueous hydrogen fluoride, the product mixed with the silicate to form a paste which is extruded and dried at 150-180 DEG  C. or dried, ground, formed into granules, and extruded.  The catalyst may contain 10 per cent. by weight of iron.  Alternatively, ferric oxide, hydroxide or nitrate may be mixed with an earth which has been treated with hydrogen fluoride and the mixture calcined or the earth and oxide may be formed into a paste, treated with hydrogen fluoride, extruded, and dried.
Patent GB-256036-A (GB)
Title: Improvements in safety valves
IPC: F16K17/04
Filed: 1925-07-13
Abstract: 256,036. Cockburns, Ltd., and Mac- Nicoll, D. July 13, 1925. Safety - valves. - A safety-valve of the kind in which a pair of helical loading springs 6 are arranged side by side between parallel bridge pieces 4, 5 strung on the valve spindle 2 has the upper bridge piece arranged to bear against a guide bush 8 for the spindle adjustably mounted in the casing.
Patent GB-665704-A (GB)
Title: Improvements in and relating to a frame structure for multi-crankshaft internal combustion engines
IPC: F02F7/00
Filed: 1949-07-06
Abstract: 665,704. Multi-crankshaft engine frames. SOC. D'ETUDES DE MACHINES THERMIQUES. July 6, 1949 [July 9, 1948], No. 17909/49. Class 7(ii) A frame 1 comprising means for locating two lower banks 4. 5 and one or more upper banks 10, 11 of piston-cylinder units and the crankshafts 2, 3 and 8, 9 associated with the -banks, is provided with longitudinally-extending partitions to form a tunnel 14, which may be used as an oil reservoir, housing an output shaft 15 driven by the crankshafts. The banks are symmetrically disposed about the longitudinal centre plane XX passing through the shaft. The partitions may be so arranged that an oil sump is formed for each crankshaft. In a modification, the upper banks also are inclined and bearings are provided at the ends of the frame for the shaft. The shaft may be that of another engine or a shaft which is driven by two similar engines. Specification 665,703 is referred to.
Patent GB-246531-A (GB)
Title: Improvements relating to telegraphic signal amplification
IPC: H04L25/24
Filed: 1924-07-26
Abstract: 246,531. Wood, K. L., and Eastern Telegraph Co., Ltd. July 26, 1924. Systems employing non-contactmaking relays.-In an amplifying arrangement in which the received signals disturb the balance of a circuit, the signals are applied to this circuit together with a locally generated alternating current, and the output ccrrent, after amplification by one or more thermionic valves and subsequent rectification, is supplied to the receiving instrument. Fig. 1 shows an arrangement employing the electrolytic current magnifier described in Specification 11314/15, the received signals passing through the coil m of the magnifier to vary the resistances between the movable electrode o and the fixed electrodes p, q. The cell is arranged as shown in a normally balanced Wheastone bridge supplied through a condenser e between the apices b, c with alternating current from a battery and reverser a. The output current from the apices f, g is applied through a transformer h to the grid circuit of an amplifying valve j of which the plate circuit is connected through a transformer c and a synchronous rectifying commutator k with the receiving instrument m<1>. Fig. 2 shows a modified arrangement employing thermionic rectifiers. Alternating current from source a is supplied through a condenser e between points f, g, and the electrodes p, q are connected to point f through the primaries of transformers h, h<1> respectively. The secondaries are connected in the grid circuits of amplifying valves r, r<1> and the plate currents are applied through transformers h<2>, h<3> to the grid circuits of rectifying valves s, s<1> respectively. The output currents are applied as shown to resistances t, t<1> connected across receiving instrument m'. In a further modification, employing the bridge system shown in Fig. 1, steady alternating current from the source a is impressed through an additional winding on the transformerh, and the output from the amplifying valve is completely rectified by a pair of twoelectrode valves and applied to the receiving instrument. Hot wire or other relays may replace the electrolytic magnifier.
Patent GB-334621-A (GB)
Title: Improvements in electric ovens
IPC: F27B3/22
Filed: 1929-06-11
Abstract: 334,621. Wild, L. W., and Wild-Barfield Electric Furnaces, Ltd. June 11, 1929. Resistance ovens.-The air is circulated by means of a centrifugal fan 7 which collects the air axially and projects it horizontally outwards against the oven walls. The heating elements 4 are external to the basket 5 for containing the articles to be heated for tempering. The fan is driven by a motor 8 and has three rectilinear radial blades.
Patent GB-1353633-A (GB)
Title: Moire fringe device and method of determining displacements using  moire fringes
IPC: G01D5/38
Filed: 1971-05-28
Abstract: 1353633 Machine tool control BENDIX CORP 28 May 1971 [2 June 1970] 17939/71 Heading B3B [Also in Divisions G2 and G4] A moire fringe device, which may be used to measure displacements in a lathe, comprises a scale grating 33, a plurality of sets 45, 56 of parallel grating lines on the scale grating having different line spacings, respectively; index grating means, a plurality of sets of parallel grating lines on the index grating means having different line spacings, respectively, each set cooperating with an associated set on the scale grating to produce a moire fringe pattern; means for supporting and relatively moving the scale grating and the index grating means, the device, in use, simultaneously producing a plurality of different moire fringe patterns; and photo-electric means for detecting each pattern and converting it into electrical signals for use to energize an associated read-out instrument. The index grating means may comprise two separate gratings 42, 43, as shown, or may be a single grating with two sets of lines, or two separate gratings placed face-to-face. The arrangement shown involves a reflective scale grating, but a transmissive scale grating may also be used. The sets of lines may be of different colours.
Patent GB-971431-A (GB)
Title: Improvements in and relating to welding
IPC: B65B51/14
Filed: 1963-05-08
Abstract: 971,431. Seaming non-metallic sheet material. UNION CARBIDE CORPORATION. May 8, 1963 [May 28, 1962], No. 18133/63. Heading B5K. A number of superimposed plies of thermoplastic film are welded together by positioning the plies 36, 38 on a support 34, compressing the area of the plies surrounding the weld area between the support 34 and a clamp 30, bringing a heat sealing element 12 into contact with the weld area and into the combined thickness of the plies to a predetermined depth, welding the plies whilst simultaneously cooling the clamp 30, first withdrawing the element 12 from the weld and then withdrawing the clamp 30 from the plies 34, 36. The element 12 of aluminium or brass comprises a shaped bar heated by an element 18 and having sealing surfaces 26, 26<SP>1</SP>. The clamping platen 30 of aluminium or brass has grooves 42 therein to retain tubing 44 through which cooling water is circulated. The machine base 32 has a resilient member 34 of rubber mounted thereon. In operation, the platen 30 is first lowered to compress the plies 36, 38 against the member 34. The sealing bar 12 is then lowered so that the surfaces 26, 26<SP>1</SP> pass through slots 40, 40<SP>1</SP>, respectively, in the platen 30 until shoulders 28 on the bar 12 abut adjustable screws 48 on the platen 30 to limit the advance of the surfaces 26, 26<SP>1</SP>. After welding, the bar 12 is retracted from the welds 50 whilst the platen 30 continues to clamp and cool the plies 36, 38 to permit a clean stripping of the surfaces 26, 26<SP>1</SP> from the welds 50. The screws 48 are adjusted so that the surfaces 26, 26<SP>1</SP> penetrate into the plies to a depth of from onethird to two-thirds of the combined thickness of the plies to be welded. In a modification, Fig. 4, for simultaneously forming a weld 50<SP>1</SP> through two plies and a weld 50 through three plies, the sealing surface 26 of the weld 50 is machined an amount " D " equal to one-third to two-thirds the difference in thickness between the greater and lesser number of plies. Alternatively, Fig. 5 (not shown), the zone 50<SP>1</SP> is deviated by underlaying it with a ply 39 of a thickness " D." In another modification, Fig. 8, the sealing element comprises separately mounted sections 12, 13, each of which welds a different number of plies. When the sections 12, 13 are advanced adjustable stoppins 80, 82, 84, 86 thereon engage the top surface of the platen 30 to independently regulate the penetration of each section into the plies. The method may be used for welding oriented or bioriented films of polyethylene, polyethylene copolymers, polypropylene, copolymers of ethylene and propylene and mixtures of polyethylene and polypropylene.
Patent GB-902063-A (GB)
Title: Improvements in or relating to magnetic recording heads
Inventor: HARKENSEE HAROLD
IPC: G11B5/235
Filed: 1961-05-18
Abstract: 902,063. Magnetic record heads. TELEFUNKEN PATENTVERWERTUNGSG.m.b.H. May 18, 1961, No. 18144/61. Class 40 (2). In a magnetic recording head, the spacer in the working gap consists of a metal foil and at least one foil of non-magnetic electrically insulating material which is thin in relation to the metal foil, and may be of mica. Where only one such insulating foil is used, it is placed between the metal foil and the trailing pole shoe. Where a head is employed for use with a record tape travelling in both directions, an additional mica foil can be provided between the metal foil and the other pole shoe.